Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » hanh chinh
hoc thieu » toc thieu, hoc hien
cua khong » hua khong, cua phuong, cua thuong
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - ((hanh trinh) or (canh tranh)) cua khong ((cong dan) or (cong tan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((hanh trinh) OR (canh tranh)) cua khong ((cong dan) OR (cong tan)) toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((hanh trinh) or (canh tranh)) cua khong ((cong dan) or (cong tan)) toan cao*.